The tFilterEmbedVsdOperStateChg notification is generated when the operational state of an embedding of a filter managed by a VSD controller in a filter with scope other than 'embedded' has changed. [CAUSE] This notification may be triggered for the following reasons: 1) An attempt to embed a filter managed by a VSD controller into an embedding filter was done. 2) An attempt to recover an embedding that is operationally down was done. 3) An attempt to change the admin state of an embedding was done. 4) The operational state of an embedding has changed to inactive due to lack of resources. [EFFECT] The effect depends on the new state. If the new state is 'active', the embedding of a filter managed by a VSD controller was successful. If the new state is 'embedFailedNoResources' the embedding was not successful due to lack of resources. If the new state is 'inactive' and the previous state was 'active' then the embedded entries were removed. Otherwise the embedding filter was not changed. [RECOVERY] If the new state is 'active' or 'inactive', no action is required. If the new state is 'embedFailedNoResources', an attempt to recover the operational state can be done by removal and reapplication of the embedding.